Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
Orders

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
Generac
Generator

Model # XG4000-5778-1 Official Generac generator

Here are the diagrams and repair parts for Official Generac XG4000-5778-1 generator, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Owner’s manual

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 205 parts  |
Generator Carburetor Gasket 078631
#26

Engine trim diagram

Generator carburetor gasket

Part #078631

Replaced by #G078631

?
Manufacturer substitution
This part replaces 078631. Substitute parts can look different from the original.
This item is not returnable
$6.86
In Stock
Generator Fuel Shut-off Valve 0H3419
#43

Frame assy diagram

Generator fuel shut-off valve

Part #0H3419

This item is not returnable
$14.46
In Stock
Generator Air Filter Cover 078608B
#24

Engine trim diagram

Generator air filter cover

Part #078608B

$63.82
In Stock
Gasket 0A8822
#20

Block assy diagram

Gasket

Part #0A8822

$8.34
In Stock
Screw 0D2414
#27

Block assy diagram

Screw

Part #0D2414

This item is not returnable
$2.16
In Stock
Elbow 0H1660
#60A

Engine trim diagram

Elbow

Part #0H1660

This item is not returnable
$2.94
In Stock
Fuel Line 0H5762
#71

Frame assy diagram

Fuel line

Part #0H5762

$12.80
In Stock
Screw M6-1 0G0919
#25

Block assy diagram

Screw m6-1

Part #0G0919

This item is not returnable
$2.16
In Stock
Screw #8 0G8382
Screw #8

Part #0G8382

This item is not returnable
$2.16
In Stock
Bolt 0H6887
#64

Frame assy diagram

Bolt

Part #0H6887

This item is not returnable
$5.17
In Stock

RECOMMENDED MAINTENANCE PARTS AND ACCESSORIES

Symptoms for gas leaf blowers

Choose a symptom to see related leaf blower repairs.

View all

What should I do if my leaf blower leaks gas?

Main causes: cracked fuel lines, leaky carburetor seals, damaged fuel tank cap, cracked fuel tank…

Read more

Why does a leaf blower vibrate excessively?

Main causes: damaged fan blade, engine needs a tune up, dirty carburetor…

Read more

Why does my leaf blower run roughly?

Main causes: stale fuel, dirty air filter, bad spark plug, cracked fuel lines, clogged carburetor…

Read more

What should I do if my leaf blower engine smokes?

Main causes: mixing too much 2-cycle oil with the gas, dirty air filter, clogged carburetor, engine needs tune up…

Read more

Why won't my leaf blower start?

Main causes: bad gas, clogged air filter, cracked fuel lines, clogged fuel filter, dirty carburetor, bad spark plug, wor…

Read more

Repair guides for gas leaf blowers

These step-by-step repair guides will help you safely fix what’s broken on your leaf blower.

View all
How to replace a leaf blower carburetor

How to replace a leaf blower carburetor

The carburetor could be the problem If the leaf blower engine won't start even though there's fuel in the tank. Follow t…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace leaf blower fuel lines

How to replace leaf blower fuel lines

Leaf blower fuel lines deteriorate with time and eventually can split or crack. You can remove and replace them yourself…

Read more
Repair difficulty
Time required
 60 minutes or less
How to rebuild a leaf blower carburetor

How to rebuild a leaf blower carburetor

If the leaf blower engine won't start even though there's fuel in the tank, the carburetor could be the problem. Follow …

Read more
Repair difficulty
Time required
 60 minutes or less

Articles and videos for gas leaf blowers

Use the advice and tips in these articles to get the most out of your leaf blower.

View all
Top 10 electric lawn and garden tools for 2023

Top 10 electric lawn and garden tools for 2023

Learn about the top 10 must-have electric lawn & garden tools for 2023…

Read more
Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

Read more
6 easy steps for maintaining a leaf blower

6 easy steps for maintaining a leaf blower

Follow this advice for caring for your leaf blower.…

Read more

Parts & More